| # |
| # For a description of the syntax of this configuration file, |
| # see scripts/kbuild/config-language.txt. |
| # |
| |
| menu "Shells" |
| |
| choice |
| prompt "Choose your default shell" |
| default CONFIG_FEATURE_SH_IS_NONE |
| help |
| Choose a shell. The ash shell is the most bash compatible |
| and full featured one. |
| |
| config CONFIG_FEATURE_SH_IS_ASH |
| select CONFIG_ASH |
| bool "ash" |
| |
| config CONFIG_FEATURE_SH_IS_HUSH |
| select CONFIG_HUSH |
| bool "hush" |
| |
| config CONFIG_FEATURE_SH_IS_LASH |
| select CONFIG_LASH |
| bool "lash" |
| |
| config CONFIG_FEATURE_SH_IS_MSH |
| select CONFIG_MSH |
| bool "msh" |
| |
| config CONFIG_FEATURE_SH_IS_NONE |
| bool "none" |
| |
| endchoice |
| |
| config CONFIG_ASH |
| bool "ash" |
| default n |
| select CONFIG_TEST |
| help |
| Tha 'ash' shell adds about 60k in the default configuration and is |
| the most complete and most pedantically correct shell included with |
| busybox. This shell is actually a derivative of the Debian 'dash' |
| shell (by Herbert Xu), which was created by porting the 'ash' shell |
| (written by Kenneth Almquist) from NetBSD. |
| |
| comment "Ash Shell Options" |
| depends on CONFIG_ASH |
| |
| config CONFIG_ASH_JOB_CONTROL |
| bool " Enable Job control" |
| default y |
| depends on CONFIG_ASH |
| help |
| Enable job control in the ash shell. |
| |
| config CONFIG_ASH_READ_NCHARS |
| bool " Enable 'read -n N' and 'read -s' support" |
| default n |
| depends on CONFIG_ASH |
| help |
| 'read -n N' will return a value after N characters have been read. |
| 'read -s' will read without echoing the user's input. |
| |
| config CONFIG_ASH_READ_TIMEOUT |
| bool " Enable 'read -t S' support." |
| default n |
| depends on CONFIG_ASH |
| help |
| 'read -t S' will return a value after S seconds have passed. |
| This implementation will allow fractional seconds, expressed |
| as a decimal fraction, e.g. 'read -t 2.5 foo'. |
| |
| config CONFIG_ASH_ALIAS |
| bool " Enable alias support" |
| default y |
| depends on CONFIG_ASH |
| help |
| Enable alias support in the ash shell. |
| |
| config CONFIG_ASH_MATH_SUPPORT |
| bool " Enable Posix math support" |
| default y |
| depends on CONFIG_ASH |
| help |
| Enable math support in the ash shell. |
| |
| config CONFIG_ASH_MATH_SUPPORT_64 |
| bool " Extend Posix math support to 64 bit" |
| default n |
| depends on CONFIG_ASH_MATH_SUPPORT |
| help |
| Enable 64-bit math support in the ash shell. This will make |
| the shell slightly larger, but will allow computation with very |
| large numbers. |
| |
| config CONFIG_ASH_GETOPTS |
| bool " Enable getopts builtin to parse positional parameters" |
| default n |
| depends on CONFIG_ASH |
| help |
| Enable getopts builtin in the ash shell. |
| |
| config CONFIG_ASH_CMDCMD |
| bool " Enable cmdcmd to override shell builtins" |
| default n |
| depends on CONFIG_ASH |
| help |
| Enable support for the ash 'command' builtin, which allows |
| you to run the specified command with the specified arguments, |
| even when there is an ash builtin command with the same name. |
| |
| config CONFIG_ASH_BUILTIN_ECHO |
| bool " Enable builtin version of 'echo'" |
| default n |
| depends on CONFIG_ASH |
| help |
| Enable support for echo, built in to ash. |
| |
| # this entry also appears in coreutils/Config.in, next to the echo applet |
| config CONFIG_FEATURE_FANCY_ECHO |
| bool " Enable echo options (-n and -e)" |
| default y |
| depends on CONFIG_ASH_BUILTIN_ECHO |
| help |
| This adds options (-n and -e) to echo. |
| |
| config CONFIG_ASH_MAIL |
| bool " Check for new mail on interactive shells" |
| default y |
| depends on CONFIG_ASH |
| help |
| Enable "check for new mail" in the ash shell. |
| |
| config CONFIG_ASH_OPTIMIZE_FOR_SIZE |
| bool " Optimize for size instead of speed" |
| default y |
| depends on CONFIG_ASH |
| help |
| Compile ash for reduced size at the price of speed. |
| |
| config CONFIG_ASH_RANDOM_SUPPORT |
| bool " Enable pseudorandom generator and variable $RANDOM" |
| default n |
| depends on CONFIG_ASH |
| help |
| Enable pseudorandom generator and dynamic variable "$RANDOM". |
| Each read of "$RANDOM" will generate a new pseudorandom value. |
| You can reset the generator by using a specified start value. |
| After "unset RANDOM" then generator will switch off and this |
| variable will no longer have special treatment. |
| |
| config CONFIG_ASH_EXPAND_PRMT |
| bool " Expand prompt string" |
| default n |
| depends on CONFIG_ASH |
| help |
| "PS#" may be contain volatile content, such as backquote commands. |
| This option recreates the prompt string from the environment |
| variable each time it is displayed. |
| |
| config CONFIG_HUSH |
| bool "hush" |
| default n |
| select CONFIG_TRUE |
| select CONFIG_FALSE |
| select CONFIG_TEST |
| help |
| hush is a very small shell (just 18k) and it has fairly complete |
| Bourne shell grammar. It even handles all the normal flow control |
| options such as if/then/elif/else/fi, for/in/do/done, while loops, |
| etc. |
| |
| It does not handle case/esac, select, function, here documents ( << |
| word ), arithmetic expansion, aliases, brace expansion, tilde |
| expansion, &> and >& redirection of stdout+stderr, etc. |
| |
| |
| config CONFIG_LASH |
| bool "lash" |
| default n |
| select CONFIG_TRUE |
| select CONFIG_FALSE |
| select CONFIG_TEST |
| help |
| lash is the very smallest shell (adds just 10k) and it is quite |
| usable as a command prompt, but it is not suitable for any but the |
| most trivial scripting (such as an initrd that calls insmod a few |
| times) since it does not understand any Bourne shell grammar. It |
| does handle pipes, redirects, and job control though. Adding in |
| command editing makes it a very nice lightweight command prompt. |
| |
| |
| config CONFIG_MSH |
| bool "msh" |
| default n |
| select CONFIG_TRUE |
| select CONFIG_FALSE |
| select CONFIG_TEST |
| help |
| The minix shell (adds just 30k) is quite complete and handles things |
| like for/do/done, case/esac and all the things you expect a Bourne |
| shell to do. It is not always pedantically correct about Bourne |
| shell grammar (try running the shell testscript "tests/sh.testcases" |
| on it and compare vs bash) but for most things it works quite well. |
| It also uses only vfork, so it can be used on uClinux systems. |
| |
| comment "Bourne Shell Options" |
| depends on CONFIG_MSH || CONFIG_LASH || CONFIG_HUSH || CONFIG_ASH |
| |
| config CONFIG_FEATURE_SH_EXTRA_QUIET |
| bool "Hide message on interactive shell startup" |
| default n |
| depends on CONFIG_MSH || CONFIG_LASH || CONFIG_HUSH || CONFIG_ASH |
| help |
| Remove the busybox introduction when starting a shell. |
| |
| config CONFIG_FEATURE_SH_STANDALONE_SHELL |
| bool "Standalone shell" |
| default n |
| depends on CONFIG_MSH || CONFIG_LASH || CONFIG_HUSH || CONFIG_ASH |
| help |
| This option causes the selected busybox shell to use busybox applets |
| in preference to executables in the PATH whenever possible. For |
| example, entering the command 'ifconfig' into the shell would cause |
| busybox to use the ifconfig busybox applet. Specifying the fully |
| qualified executable name, such as '/sbin/ifconfig' will still |
| execute the /sbin/ifconfig executable on the filesystem. This option |
| is generally used when creating a statically linked version of busybox |
| for use as a rescue shell, in the event that you screw up your system. |
| |
| Note that when using this option, the shell will attempt to directly |
| run '/bin/busybox'. If you do not have the busybox binary sitting in |
| that exact location with that exact name, this option will not work at |
| all. |
| |
| config CONFIG_FEATURE_COMMAND_EDITING |
| bool "command line editing" |
| default n |
| depends on CONFIG_MSH || CONFIG_LASH || CONFIG_HUSH || CONFIG_ASH |
| help |
| Enable command editing in shell. |
| |
| config CONFIG_FEATURE_COMMAND_EDITING_VI |
| bool "vi-style line editing commands" |
| default n |
| depends on CONFIG_FEATURE_COMMAND_EDITING |
| help |
| Enable vi-style line editing in the shell. This mode can be |
| turned on and off with "set -o vi" and "set +o vi". |
| |
| config CONFIG_FEATURE_COMMAND_HISTORY |
| int "history size" |
| default 15 |
| depends on CONFIG_FEATURE_COMMAND_EDITING |
| help |
| Specify command history size in shell. |
| |
| config CONFIG_FEATURE_COMMAND_SAVEHISTORY |
| bool "history saving" |
| default n |
| depends on CONFIG_ASH && CONFIG_FEATURE_COMMAND_EDITING |
| help |
| Enable history saving in ash shell. |
| |
| config CONFIG_FEATURE_COMMAND_TAB_COMPLETION |
| bool "tab completion" |
| default n |
| depends on CONFIG_FEATURE_COMMAND_EDITING |
| help |
| Enable tab completion in shell. |
| |
| config CONFIG_FEATURE_COMMAND_USERNAME_COMPLETION |
| bool "username completion" |
| default n |
| depends on CONFIG_FEATURE_COMMAND_TAB_COMPLETION |
| help |
| Enable username completion in shell. |
| |
| config CONFIG_FEATURE_SH_FANCY_PROMPT |
| bool "Fancy shell prompts" |
| default n |
| depends on CONFIG_FEATURE_COMMAND_EDITING |
| help |
| Setting this option allows for prompts to use things like \w and |
| \$ and also using escape codes. |
| |
| endmenu |
